Implement support for "ITU-R BT.2020" colorspace.

gtaylor / python-colormath

A python module that abstracts common color math operations. For example, converting from CIE L*a*b to XYZ, or from RGB to CMYK

BSD 3-Clause "New" or "Revised" License

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A few notes:

The conversion matrices and some of the transfer functions constants are computed with colour. I did not added a reference as there are no references atm in the codebase.
The way transfer functions are implemented as of now, i.e. in the RGB_to_XYZ and XYZ_to_RGB definitions is not very maintainable which is fine assuming only a few colorspaces are implemented.
The matrices of the various RGB colorspaces don't round trip properly, I would suggest keeping the NPM and have the inverse computed with np.linalg.inv.
I added a round-trip test for the RGB colorspace with transfer functions in mind, could be extended but it is a start.

gtaylor / python-colormath